Flex uses unpacking by default

[andrew-demb]

Since symfony/flex#656 unpacking is enabled by default.
To use previous behavior user need explicitly use "--no-unpack".

Reference in doc: https://symfony.com/doc/4.4/setup.html#installing-packages (cannot provide persistent link to line in https://github.com/symfony/symfony-docs/blob/4.4/setup.rst)

[xabbuh]

@andrew-demb Thanks for noticing. Would you like to send a PR to change this?

[andrew-demb]

No, I can't choose an appropriate alternative description due to lack of language knowledge :(

[wouterj]

I would change the whole paragraph to something like:

You won't see the symfony/debug-pack dependency in your composer.json, as Flex automatically unpacks the pack. This means that it only adds the real packages as dependencies (e.g. you will see the new symfony/var-dumper in require-dev). While it is not recommended, you can use the composer require --no-unpack ... option to disable unpacking.

Please create a PR - this way we can give credits to you :) We're all non-native english speakers as well, so together we can make something readable 😉